Bezvershenko, I.I. (1971) “On application of some modifications of S. A. Chaplygin’s method to Cauchy’s limit problems ”,
Ukrains’kyi Matematychnyi Zhurnal, 23(2), pp. 221–229. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/8504 (Accessed: 10 April 2025).